CABALETTA BIO INC (CABA) Institutional Ownership Changes & 13F Activity

CABALETTA BIO INC (CABA). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include T. Rowe Price Investment Management, Inc., Bain Capital Life Sciences Investors, Llc, State Street Corp, Price T Rowe Associates Inc, and Millennium Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
State Street CorpBuy+7,369,327+1568.0%7,839,305$24.38MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+182,055—182,055$566.19KQ2 2026Sep 09, 2026
Citadel Advisors LlcBuy+3,522,112—3,522,112$10.95MQ2 2026Sep 02, 2026
California State Teachers Retirement SystemBuy+1,550—1,550$4.82KQ2 2026Aug 24, 2026
Cantor Fitzgerald, L. P.Buy+35,001+4.6%800,001$2.49MQ2 2026Aug 19, 2026
Stonepine Capital Management, LlcBuy+867,100+1734.2%917,100$2.85MQ2 2026Aug 17, 2026
Almitas Capital LlcSell-211,491-62.7%125,900$391.55KQ2 2026Aug 17, 2026
T. Rowe Price Investment Management, Inc.Buy+7,789,902+70.3%18,869,907$58.69MQ2 2026Aug 14, 2026
Bain Capital Life Sciences Investors, LlcBuy+7,564,320+78.2%17,241,445$53.62MQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+3,976,397+899.1%4,418,674$13.74MQ2 2026Aug 14, 2026
Millennium Management LlcSell-3,834,790-65.0%2,068,491$6.43MQ2 2026Aug 14, 2026
Woodline Partners LpBuy+2,949,900+235.9%4,200,142$13.06MQ2 2026Aug 14, 2026
Opaleye Management Inc.Buy+2,483,800+180.0%3,863,800$12.02MQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+1,428,605+182.4%2,211,825$6.88MQ2 2026Aug 14, 2026
Sphera Funds Management Ltd.Buy+1,329,012—1,329,012$4.13MQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-1,086,986-43.5%1,410,931$4.39MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+828,145—828,145$2.58MQ2 2026Aug 14, 2026
Heights Capital Management, IncBuy+755,626—755,626$2.35MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdSell-508,150-26.3%1,426,840$4.44MQ2 2026Aug 14, 2026
Cormorant Asset Management, LpSell-500,000-9.1%5,000,000$15.55MQ2 2026Aug 14, 2026
Susquehanna Portfolio Strategies, LlcBuy+365,699+2078.4%383,294$1.19MQ2 2026Aug 14, 2026
Adage Capital Partners Gp, L.L.C.Buy+345,000+3.9%9,174,758$28.53MQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+324,062+637.6%374,886$1.17MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+241,565—241,565$751.27KQ2 2026Aug 14, 2026
Bank Of America CorpBuy+224,057+83.2%493,314$1.53MQ2 2026Aug 14, 2026
Superstring Capital Management LpBuy+212,413+19.9%1,278,652$3.48MQ2 2026Aug 14, 2026
Ikarian Capital, LlcSell-200,000-22.2%700,000$2.18MQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+190,872+3181.2%196,872$612.27KQ2 2026Aug 14, 2026
Susquehanna Fundamental Investments, LlcBuy+152,964—152,964$475.72KQ2 2026Aug 14, 2026
Rafferty Asset Management, LlcBuy+146,107—146,107$454.39KQ2 2026Aug 14, 2026
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Frequently asked questions about CABA activity

  • Which institutional owners are buying CABA?

    Institutional owners buying CABA include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CABA activity?

    "Buy" means an investor increased their reported position in CABA compared to the prior reporting period. This reflects growing exposure to CABALETTA BIO INC (CABA) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CABA increasing?

    Institutional interest in CABA can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.